#include <iostream>
#include <string>
#include "PL4_worker.h"

using std::cout;
using std::endl;
using std::cin;
int main(int argc, char const *argv[])
{

    WaiterSinger ws;
    ws.set();
    ws.show();

    Singer s;
    s.set();
    s.show();

    Waiter w;
    w.set();
    w.show();
    
    return 0;
}
